Rod-packing.



Patented July 3|, 1900. H. G. STRANG.

R 0 D P A C K I N G (Application filed June 30, 1898.)

' (No Model.)

2 Sheets8heet L m: Nor-mm PETERS co. Pnmouwa. wmmuuww, n c,

No. 655,030. Patented .Iuly 3|, I900.

' H. C. STRANG.

non PACKING.

(Applic t filed June 30, 1898.)

(No Model.) 2 Sheets-Sheet 2 III/ill IIIIIl/l/ll MIII/III mum 'uuui'dii" u ENITED STATES PATENT GFFICEE.

lIENRIK 0. strains, or CHICAGO, ILLINOIS.

oc-PAjckme.

ammon forming as r h ttrs'ratent No. 655,030, aaeearuly 31, who.

ma ia 51mm so. 1898.

To r Z Z1113716 117; it ag cantata Be it knownthat I, HENBIK O.. S'rRZ.Ne, a

itizen'f I PlUJi QQ .Stet r id n at :v cago, in the county of Cook andState ofIlli;

liois, have invented certain new and useful Improvements in Bod-Packing;and I dohere-j by declare the followingto be a full, clear, and exactdescription of the invention ,such as will pertains to make anduse thesame. N This invention relates to an improved arrangement for use onengines where the motive agent is of high pressure andtemperature and isespecially adapted for use on gas engines. I L I Heretofore seriousdifficulties have been encountered in operatingcertain types of enginesfor the wantof a suitable packing and stuffing box. The object,therefore, of this. invention is to provide an arrangement of thischaracter in which the rod works through a space or ehable othersskilled in the art to which it apchamber in which water is made tocirculate;

Any other liquid or suitable lubricating substance may be employed, butordinarily the water circulation will be preferred. The metallicrod-packing is automatically adjustable to compensateforthe wear andactionof the rod, so that a close-fitting joint is always assured withthe least friction possible.

Figure 1 is a broken-away longitudinal section showing a part of anengine-cylinder, the

piston-rod and packing being shown in work-] ing order." Fig. 2 is alongitudinal section through the line of the stuffing-box and packing,the piston-rod .being shown in elevation. Fig. 3 is an elevation of oneof the adjacent inside follower end packing-rings. Fig. 4 is anelevation of an inside sectional ring placed next to 'the solid endring. Fig. 5 is an elevation of one of the inside sectional rings. Fig.6 is an'elevation' of a companion outside ring. Fig. 7 is an elevationof a sectional end ring. Fig. 8 is a section showingtwo of the sectionalrings that bear on each other, the division-line's being shown indifferent planes. Fig. 9 is a section of the ring shown in Fig. 3. Fig.10 is a sectionof the ring shown in Fig. 4. Fig. 11 is a section of thering shown in Fig. 5. Fig. 12 is a section of the ring sesame. 684,824.on model.)

shown in Fig. 6, and Fig. 13 is a section of the ring shown in Fig. 7.i.

A mayjepresent the cylinder of anengine; A",- the water jacket orflcasingisurro'unding "the same; A the cross-head; A ,"the castingsupporting the cylinder and cross-head, and A4 the piston-rod.

The stufling-box is what might be termed af double one, being dividedinto two parts with a space between. A full set of packingrings isplaced in each part; The part B or outer stuffing-boxis detachablysecured in position by a number of vtap-bolts a, seating.

in the inner end of thewater-jacket. The inner part B of thestuffing-box is formed in the end of the engine-cylinderoby thickeningthe casting at that point,'as shown in Figs. 1 and 2. This arrangementprovides for the water space or chamber B ,,jint0 which thecirculating-passages a, a open from the water-space a*-, between thecylinder and its inclosing jacket, o may represent the inlet and a theoutlet connection for maintaining the circulation of the water or otherliquid cooling agent. This circulation may bemaintained by gravity or aforcedmechanical operation, as the conditions underwhich the engine isworking may require. The two sets of metallic packing-rings used inthetwo part stuflingbox are exact duplicates, so

that adescriptionof one set will answer for both, the same referencecharacters being used on companion 'rings in each set. The inneradjacent follower or companion rings 1) are solid and are cut away ontheir outer side to provide a shoulder-bearingb to receivethe ends ofthe coil-spring b surrounding the piston-rod, and support the same awayfrom frictional contact therewith. The inner face of the solidfollower-ringb isl cut away at an angle, forming the; beveled surface bThe joining face of the nextring b is cut away at. a corresponding angleThe periphery of this ring btis cut away at an inwardly or downwardlysloping angle from the point of contact with its outside followerring toits inner edge of but little thickness and forms a ring that isapproximately of a triangular shapeincross-section. The inner straightcircumferential surface of the ring but is seated in a reversedposition, the inperatu're as to require the circulating cooling iscontinuous, so that a cooling temperature ner beveled surface bearing onthe. correspondingly-beveled surface of the ring I), the straightsurface orperiphery d being next to the inclosing wall of the stuffingbox. Next to the ring 01 is its companion ring d the inner abutting endsof these two companion rings coming together on a vertical line 01 Thebeveled surface of the ring 01 has 03h tact with thecorrespondingly-beveled'surface t of the ring d, which is aduplicatecompanion ring of the ring I). An annular space d is left between theinneradjacent wedge-sh pely ends of the rings'b and (1 so as to providefor the adjustment in compensating for'the wear. This adjustment isautomatically accomplished by the constant pressure of the spring I).Thus a series of four rin'gs forms a set of packing-rings proper, andeach ring is divided into three segmental sections on the two verticalplanes 9 and g, each approximately one-half the-depth of the ring, andahorizontal plane surface g, connecting the two vertical plane surfacesand forming overlapping joints. These ring-sections are loosely joinedtogether with reference to each other, but form a'tight joint againstthe entrance of water from the circulating-passages. This division ofthe rings also adapts them to automatically conform to anyirregularities in the working conditions of the piston-rod, such as therod being out of line. The tension' of the spring is proportionatelydivided between the two sets of rings, so that the adjustment maintainedis uniform. Instead of dividing each ring of the series into threesections they may be divided into two parts or more, as will be the mostsuit-able for different types of engines, and I do not therefore limitmyself to the precise construction and arrangement shown. i a The seriesof rings are provided with threaded tap-holes g for the connection of asuitable tool in putting in or taking out, the rings.

.When inserting the rings, they will be so placed that thedivision-lines will be in different planes, so as to break joints.

' The outer end of the stufiing-box is closed by a gland G, having itsinner face beveled at an angle corresponding to and fitting theadjoining face of the first packing-ring. This gland isprovided with anoil-chamber h, from which the piston-rod may be lubricated.

T'he circulating cooling fluid through the chamber or space surroundingthe piston-rod is always maintained.

'1 do not confine myself to the two-part stuffing-boxarrangementshown,'but may use one set of rings under; the usual or ordinaryconditions, especially in steam and other types of engines not having sohigh a tem feature in order to keep the piston-rod in a good workingcondition.

Having thus described my invention, what I claim as new, and desire tosecure by Letters A Patent, is-- 1. A two-part stuffing-box, having acomplete set of packing-rings in each part and separated by a chamber orspace surrounding the piston-rod and opening into the water- 'spacebetween the engine-cylinder and its inclosing jacket, substantially asdescribed.

2. A two-part stuffing-box, having a completeiride'pendent set ofpacking-rings in each part and separated-by-a chamber or space theinclosing walls of which are exterior to that of the walls of thestufling-box and having passages communicating with the water-spacebetween the engine-cylinder and. its inclosing jacket, whereby acontinuous circulation of a cooling iiuid is. brought in contact withthe piston-rod com monvwith that of the chem lation between the cylinderand inclosing jacket, substantially as described,

3. The combination with a stuffingbiox, of .a chamber or space dividingthestuffing-box into two parts and openin g i nto thewaterspace betweenthe enginecylinder andjacket, whereby a continuous; circulation of acooling fluid is brought in contact with the piston-rod, substantiallyas described.

4. A stuffing-box', divided .into two. parts, one part of which isformed in the end of the engine-cylinder, the other partbeingd etacbable and independent therefrom, said two parts being separated byachamber or space communicating'with the water-spaceof the.

engine-cylinder and inclosing jacket and providing for a continuouscirculation of acooling fluid having contact with the piston-rod,substantially as described.

5. The combination in a twofpart stufiingbox, one part ofwhich isformedin the engine-cylinder and the other part independent and detachabletherefrom, the dividing cihamher or space providing for a continuouscirculation of a cooling liquid, the independent sets ofpacking-ringgthe piston-rod, and the spring, encircling said rodandhavingits re spective ends bearing on and compressing each set ofpacking-rings, substantially as described. i V I 7 6. A two-partstuffing-box, each part being constructed separably from the otherand'p'rov-ided wit-hindependentsets-of packing-rings, aliquid-coolingchamber,formed between and exte-riorly to the; walls of each of -Saidparts and through which a continuous circulation is maintained, thepiston-rod,workingtherethrough, and a coiled spring, locatedoutside ofeither part of the stufling-box a'nd'encircling the piston=rod butsupportedout of contact therewith and in position to exert a ton sion onboth sets of packing-rings alike and hold the same in place andautomatically compensate for the wear so as to uniformly maintain atight joint, substantially as described.

7. The combination witha stuffing-box, dision, and press against the twosets of pack- 10 vided transversely by a liquid-cooling chamlug-ringsalike, substantially as described. her or space whose walls are exteriorto the In testimony whereof I affix my signature walls of the boxprgper, of tlhe two sets of ie presence of two witnesses.

5 packing-rings locate on eac side of and separated from each other bysaid cooling- HENRIK STRANG chamber,the piston-rod,and the coiledspring, Witnesses: located in said cooling-chamber and encir- L. M.FREEMAN, cling said rod and adapted to divide its ten- L. B; COUPLANDJ

